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Debugging formats supported by CCS5.4 (for AM335x)

Vasili Galka
Expert 2690 points

What debug info formats are supported? Is DWARF version 4 supported?

  • 0
    TI__Guru**** 252540 points

    For the TI ARM compiler, as of version 5.0.x, the default debug format is Dwarf version 3.  Older compilers default to Dwarf version 2, but you can choose version 3 with the build switch --symdebug:dwarf_version=3.

    Thanks and regards,

    -George

  • 0 in reply to George Mock
    Expert 2690 points

    Hi George,

    Thank you for the info, but that's not exactly what I asked...
    If I compile something with G++ and include DWARF version 4, will CSS support it?

    Best,
    Vasili

  • 0 in reply to Vasili Galka
    TI__Guru*** 130875 points

    Hi Vasili,

    here is some further feedback:

    Dwarf 4 support : Yes     

    GCC extension support : No

     

    So for gcc/g++,  a user needs to  use –gstrict-dwarf  option to restrict GCC to use strict DWARF tags.

    As of 5.4, CCS does not know how to skip GCC extension DWARF tags properly, CCS may load the debug info incorrectly and/or CCS may crash.

    For 5.5, we are looking to add code to skip these extension tags properly, CCS can load the object files without crash but ignore the extension tags

    We are  working on support for GCC extension support for future release. (maybe 6.0)

    Hope this helps.

    Best Regards,

    Lisa

  • 0 in reply to Lisa TI
    Expert 2690 points

    Thank you very much! This answers my question :-)

  • 0 in reply to Vasili Galka
    Expert 2690 points

    Hi Lisa,

    It seems what you said isn't entirely accurate.

    I'm using CCS 5.4. It loads binary compiled with "-g -gdwarf-3 -gstrict-dwarf" fine.
    But complains "DWARF information is corrupted" for binary compiled with "-g -gdwarf-4 -gstrict-dwarf".

    Best,
    Vasili